How to realize the working Mode switch in OpenWRT

This article mainly introduces OpenWRT how to achieve the working mode switch, has a certain reference value, interested friends can refer to, I hope you can learn a lot after reading this article, the following let the editor take you to understand it.

DIR-505 has a working mode switch, which can set three modes, but after brushing OpenWRT, there is no function by default. We can use GPIO to read and get the position of the switch.

#! / bin/shread_gpio () {(echo $1 > / sys/class/gpio/export) > & / dev/null (echo "in" > / sys/class/gpio/gpio$1/direction) > & / dev/null return `cat / sys/class/gpio/gpio$1/ value`;} read_gpio 19 / cat / sys/class/gpio/gpio$1/ value`;} read_gpio 19 / cat / sys/class/gpio/gpio$1/ / value`;} read_gpio 19 / read_gpio 19 / cat / sys/class/gpio/gpio$1/ / value`;} read_gpio 19 / cat / sys/class/gpio/gpio$1/ / value`;} read_gpio 19 / cat / sys/class/gpio/gpio$1/ / value`. 11001) v = "repeater";; 01001) v = "hotspot"; 11000) v = "4th";; *) v = "error";; esacecho $v

According to the OpenWRT official website (http://wiki.openwrt.org/toh/d-link/dir-505#buttons), there is a DIR-505L switch with four gears, and the DIR-505 actually has it, but the shell blocks the fourth gear and can't be broken. If you have enough egg pain, you can open it with a carving knife.

We can add judgment code to the boot script (/ etc/rc.local) and make different configurations according to the gear to achieve different uses.

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